program-id.y.data division.working-storage section.
1 s pic x(9).
1 t pic x(9).
procedure division.a.move s to t
accept s
if""=s(5:)or"t"=s(6:)display function trim(s)" boo"go a else
if s<>t or""=s(8:)display function trim(s)" eat"go a.